Abstract

Besides above, foaming practice is also able to increase furnace yield because by carbon injection into slag of electric arc furnace, (FeO) content in slag descends and thus improves the quality of melting steel.

The results of heats in each of experimental melting procedures, namely: - existing melting procedures, - experimental melting procedure one, two, three and four. Were statistically analysed by using the MINITAB statistical package.

The analysis showed that the new melting procedures resulted in : - a decrease in effective melting time, - a significant decrease (28% to 32%) in (FeO) content in slag, - a particularly notable decrease (16% to 28%) in gunning material consumption per ton liquid steel, - a decrease in electrode consumption per ton liquid steel (7%).